单项选择题
When a fire（）at the National Exhibition, at least then priceless paintings were completely destroyed.
A.broke off B.broke out C.broke down D.broke up
单项选择题 Bush's farm（）is said to be at bottom of the state of Texas in north America.
单项选择题 His attitude toward us seems（）
单项选择题 I was busy with my paper when I heard someone（）in the room above.
